/*
 * Copyright 2022-2025 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.instancio.internal.feed;

import org.instancio.documentation.InternalApi;
import org.instancio.feed.DataSource;
import org.instancio.internal.util.Sonar;
import org.instancio.internal.util.Verify;

import java.io.IOException;
import java.io.InputStream;

@InternalApi
public interface DataLoader<T> {

    @SuppressWarnings(Sonar.DEFINE_DEDICATED_EXCEPTION)
    T load(DataSource dataSource) throws Exception; //NOPMD

    default InputStream getInputStream(final DataSource dataSource) throws IOException {
        return Verify.notNull(dataSource.getInputStream(), "null InputStream");
    }
}
